scholarly journals A monthly tidal envelope classification approach for semi-diurnal regimes with variability in S<sub>2</sub> and N<sub>2</sub> tidal amplitude ratios

2019 ◽  
Author(s):  
Do-Seong Byun ◽  
Deirdre E. Hart
Keyword(s):  
Coastal Waters ◽  
Coastal Management ◽  
Coastal Flooding ◽  
Amplitude Ratios ◽  
Tidal Amplitude ◽  
Classification Approach ◽  
Aotearoa New Zealand ◽  
Key Characteristics ◽  
Management And Development ◽  
Model Database

Abstract. In a world of increasing coastal inundation hazards, an understanding of daily through to monthly tidal envelope characteristics is fundamental to resilient coastal management and development practices. For decades, scientists have described and compared daily tidal forms around the world’s coasts based on the four main tidal amplitudes. Our paper builds on this daily method by adjusting the constituent analysis to distinguish the different monthly types of tidal envelope occurring in the semi-diurnal coastal waters around Aotearoa New Zealand. Analyses of tidal records from 23 stations are used, alongside data from the FES2014 tide model database and theoretical experiments, in order to find the key characteristics and constituent ratios of tides that can be used to classify monthly tidal envelopes. The resulting monthly tidal envelope classification approach described (FMS) is simple, complementary to the successful and much used daily tidal form factor (F), and of use for coastal flooding, climate change and maritime operation management and planning applications in semi-diurnal regimes.

scholarly journals A monthly tidal envelope classification for semidiurnal regimes in terms of the relative proportions of the S<sub>2</sub>, N<sub>2</sub>, and M<sub>2</sub> constituents

Ocean Science ◽  
2020 ◽  
Vol 16 (4) ◽  
pp. 965-977
Author(s):  
Do-Seong Byun ◽  
Deirdre E. Hart
Keyword(s):  
Coastal Waters ◽  
Coastal Management ◽  
Intertidal Zone ◽  
Coastal Flooding ◽  
Extreme Weather Events ◽  
Tidal Water ◽  
Weather Events ◽  
Key Characteristics ◽  
Management And Development ◽  
Water Level Variations

Abstract. Daily tidal water level variations are a key control on shore ecology, on access to marine environments via ports, jetties, and wharves, on drainage links between the ocean and coastal hydrosystems such as lagoons and estuaries, and on the duration and frequency of opportunities to access the intertidal zone for recreation and food harvesting purposes. Further, high perigean spring tides interact with extreme weather events to produce significant coastal inundations in low-lying coastal settlements such as on deltas. Thus an understanding of daily through monthly tidal envelope characteristics is fundamental for resilient coastal management and development practices. For decades, scientists have described and compared daily tidal forms around the world's coasts based on the four main tidal amplitudes. Our paper builds on this “daily” method by adjusting the constituent analysis to distinguish between the different monthly types of tidal envelopes occurring in the semidiurnal coastal waters around New Zealand. Analyses of tidal records from 27 stations are used alongside data from the FES2014 tide model in order to find the key characteristics and constituent ratios of tides that can be used to classify monthly tidal envelopes. The resulting monthly tidal envelope classification approach described (E) is simple, complementary to the successful and much used daily tidal form factor (F), and of use for coastal flooding and maritime operation management and planning applications in areas with semidiurnal regimes.

The coastal vulnerability of the north-eastern sector of Gozo Island (Malta, Mediterranean Sea)

2020 ◽  
Author(s):  
Mauro Soldati ◽  
George Buhagiar ◽  
Anton S. Micallef ◽  
Angela Rizzo ◽  
Vittoria Vandelli
Keyword(s):  
Mediterranean Sea ◽  
Coastal Management ◽  
Sandy Beach ◽  
Coastal Flooding ◽  
Coastal Areas ◽  
Coastal Hazards ◽  
Water Runoff ◽  
Coastal Vulnerability ◽  
Economic Point ◽  
Very High

&lt;p&gt;Coastal hazards, including marine-related and gravity-induced processes such as landslides, coastal erosion, storm water runoff and coastal flooding, may have different impacts mainly due to local geomorphological characteristics and natural and anthropogenic settings. The sustainable conservation of coastal areas represents a worldwide issue and therefore, coastal vulnerability and risk assessments are of paramount importance for ensuring appropriate coastal management.&lt;/p&gt;&lt;p&gt;This study is focused on the assessment of coastal vulnerability along the NE sector of the Island of Gozo (Malta, Mediterranean Sea), which is characterized by diverse landforms, including plunging cliffs, sloping coasts, pocket beaches, shore platforms and a large sandy beach partly backed by dunes. Results of detailed geomorphological investigation, integrated with the analysis of marine geophysical data, show that the study area is particularly susceptible to mass movements, coastal flooding and erosion processes.&lt;/p&gt;&lt;p&gt;From the economic point of view, Gozo Island is considered an attractive geotourist destination due to its high environmental, cultural and geological heritage. In particular, the study area hosts Roman remains and two important natural protected areas included in the Natura 2000 network. Moreover, the presence of quarrying areas contributes to increase the economic value of the study area.&lt;/p&gt;&lt;p&gt;The evaluation of coastal vulnerability refers to the methodological approach proposed in the framework of the EU-funded RISC-KIT project, partially modified to adapt the method to the context of the study area and to the available information. Specifically, the method is based on the evaluation of the exposed elements in the investigated area by applying a set of indicators related to the local land use, anthropogenic and natural assets, and economic activities. Furthermore, a social vulnerability indicator is applied to evaluate the socio-economic characteristics of the population potentially exposed to coastal hazards. Available data is overlaid and reclassified by means of specific GIS tools in order to obtain the overall vulnerability level of the investigated area, represented on a coastal vulnerability map.&lt;/p&gt;&lt;p&gt;Results highlight that 18.3% of the study area is characterized by high to very high vulnerability: including Marsalforn Bay, which hosts an extensive urban centre, and the area nearby Dahlet Qorrot Bay, where a natural protected site is located. Ramla Bay, a very important tourist attraction hosting the largest sandy beach in Gozo, is characterized by very high vulnerability. Most of the investigated area (61.3%), is however characterized by a medium level of vulnerability, while areas characterized by low vulnerability (20.4%) mainly correspond to abandoned agricultural fields and bare rocks outcrops.&lt;/p&gt;&lt;p&gt;This research represents a first attempt at the assessment of coastal vulnerability in the Maltese archipelago, and shows that the method used can be easily applied to other Mediterranean coastal areas providing policy makers with comprehensive coastal vulnerability information. The latter is crucial to approaching sustainability, through integrated coastal management.&lt;/p&gt;

scholarly journals Applying Systems Thinking to Coastal Infrastructure Systems

2018 ◽  
Vol 24 (1) ◽  
pp. 71-87 ◽  
Author(s):  
David A. Pezza ◽  
C. Ariel Pinto
Keyword(s):  
Systems Thinking ◽  
Coastal Waters ◽  
Systems Approach ◽  
Coastal Flooding ◽  
Simple Approach ◽  
Coastal Communities ◽  
Integrated Systems ◽  
Soft Systems ◽  
The Face ◽  
Uncertain Future

Coastal communities have an uncertain future as municipalities grapple with an increase in the frequency of coastal flooding. This article offers a simple approach to make decisions based on systems thinking. The objective of this article is to explore how to represent the coast as a system, how to apply systems thinking to coastal infrastructure, and to offer a framework to employ an integrated systems approach. The framework aids a community to map its future in the face of the changing coastal waters and a way to assess if they are moving toward a solution. It also provides a disciplined way of structured thinking to judge a problem and determine whether a hard or soft systems approach is appropriate. This kind of thinking is necessary for a community to plan capital improvement investments that are compatible with an uncertain future brought about by climate change.

scholarly journals Rural Landscape Signatures: the interconnectedness of place, culture and ecosystems

2020 ◽  
Author(s):  
Bruno Marques ◽  
Alison Baker
Keyword(s):  
New Zealand ◽  
Cultural Values ◽  
Rural Landscape ◽  
Design Management ◽  
Social Perspectives ◽  
Cultural Perspectives ◽  
Planning And Design ◽  
Aotearoa New Zealand ◽  
Alternative Approach ◽  
Management And Development

Aotearoa-New Zealand’s legal, ecological and social perspectives are composed of combined Pākehā (NZ European) and Māori identities, values, perspectives and traditions. These two very different cultural perspectives are reflected in the conversations and dialogues occurring with regards to the landscape, and also in the lands forms and features itself. The separation between traditional Māori values and prevailing European developments and design approaches promotes regional landscapes that lack place and a sense of place within the wider Aotearoa-New Zealand context. South Wairarapa, in Aotearoa-New Zealand’s lower North Island, presents such a collision; the land bears the imprints of its colonising rural pedigree, and blatantly and unashamedly disregards the undeniable Indigenous Māori connection. This paper explores how landscape architecture can overlay past cultural conversations to restructure and enhance the presence of a defined regional and cultural identity and therefore promote a re-emergence of placed identity. Cultural signatures are written onto the landscape to be read and interpreted, and can be re-written, corrected and modified so to further reflect Indigenous and intrinsic connectedness with one’s landscape and its associated processes. The design, management and development of rural regional landscapes can evidence cultural values and landscape heritages while maintaining their obvious need for economic and regional prosperity, and sustainability. The apparent disconnect most modern populations have with their landscape is palpable internationally; the processes and management techniques of old are insufficient. There is a need in Aotearoa-New Zealand for an alternative approach to regional planning and design practices, which evidence our cultural pedigrees. Prominent landscape signatures should be reworked, new ones written, and the old rewritten, to create an inter-relatedness and interconnectedness between humans and ecosystems to protect past places and placements, enhance new ones, and promote the sustainable management and stewardship of the landscape.

scholarly journals Rural Landscape Signatures: the interconnectedness of place, culture and ecosystems

2020 ◽  
Author(s):  
Bruno Marques ◽  
Alison Baker
Keyword(s):  
New Zealand ◽  
Cultural Values ◽  
Rural Landscape ◽  
Design Management ◽  
Social Perspectives ◽  
Cultural Perspectives ◽  
Planning And Design ◽  
Aotearoa New Zealand ◽  
Alternative Approach ◽  
Management And Development

Aotearoa-New Zealand’s legal, ecological and social perspectives are composed of combined Pākehā (NZ European) and Māori identities, values, perspectives and traditions. These two very different cultural perspectives are reflected in the conversations and dialogues occurring with regards to the landscape, and also in the lands forms and features itself. The separation between traditional Māori values and prevailing European developments and design approaches promotes regional landscapes that lack place and a sense of place within the wider Aotearoa-New Zealand context. South Wairarapa, in Aotearoa-New Zealand’s lower North Island, presents such a collision; the land bears the imprints of its colonising rural pedigree, and blatantly and unashamedly disregards the undeniable Indigenous Māori connection. This paper explores how landscape architecture can overlay past cultural conversations to restructure and enhance the presence of a defined regional and cultural identity and therefore promote a re-emergence of placed identity. Cultural signatures are written onto the landscape to be read and interpreted, and can be re-written, corrected and modified so to further reflect Indigenous and intrinsic connectedness with one’s landscape and its associated processes. The design, management and development of rural regional landscapes can evidence cultural values and landscape heritages while maintaining their obvious need for economic and regional prosperity, and sustainability. The apparent disconnect most modern populations have with their landscape is palpable internationally; the processes and management techniques of old are insufficient. There is a need in Aotearoa-New Zealand for an alternative approach to regional planning and design practices, which evidence our cultural pedigrees. Prominent landscape signatures should be reworked, new ones written, and the old rewritten, to create an inter-relatedness and interconnectedness between humans and ecosystems to protect past places and placements, enhance new ones, and promote the sustainable management and stewardship of the landscape.

Sign in / Sign up

Export Citation Format

Share Document